港口移动式高架起重机变幅系统方案设计

发布时间：2018-05-28 15:03

本文选题：港口移动式高架起重机 + 变幅系统　；参考：《大连理工大学》2014年硕士论文

【摘要】：港口移动式高架起重机是一种在汽车起重机基础上发展起来的,广泛应用于港口完成装卸、堆码及转运等作业的可方便转场的新机种。高架起重机的工作环境复杂,工作级别高,在满足臂架强度要求的前提下,要求油缸受力小,且重物在变幅过程中水平移动。因此,其变幅系统的设计合理与否直接影响整机性能的优劣。本文以高架起重机变幅系统为研究对象,分析变幅系统设计的关键目标,建立变幅系统设计计算模型,运用解析法对高架起重机变幅系统的计算方法进行了研究,并开发了变幅系统方案设计软件。本文主要研究工作包括以下几个方面： (1)研究了滑轮组补偿法的基本原理,建立了滑轮组补偿法计算模型,给出了高架起重机补偿滑轮位置的确定方法及重物运动轨迹的计算方法。 (2)分析了决定高架起重机起重性能的主要因素,并分别从整机倾覆稳定性和臂架力学性能角度建立了起重性能计算模型,给出了高架起重机起重性能计算方法。 (3)研究了高架起重机变幅系统三铰点布局设计的计算方法,建立了变幅油缸计算模型,给出了高架起重机油缸受力及稳定性校核的计算方法。 (4)开发了港口移动式高架起重机变幅系统方案设计软件,并以YHC280型高架起重机为研究对象,利用设计软件对其进行设计计算,获得了变幅系统参数,验证了软件设计计算的合理性和实用性。
[Abstract]:Port mobile overhead crane is a kind of new machine which is developed on the basis of truck crane and widely used in port to complete loading and unloading, stacking and transshipment, etc. The working environment of the overhead crane is complex and the working grade is high. Under the premise of meeting the requirements of the strength of the boom, it is required that the cylinder bear less force and the weight move horizontally in the process of changing amplitude. Therefore, whether the design of the amplitude-varying system is reasonable or not directly affects the performance of the whole machine. In this paper, the key object of the design of the luffing system is analyzed, and the design and calculation model of the luffing system is established. The calculation method of the luffing system of the elevated crane is studied by using the analytical method. The design software of amplitude change system is also developed. The main research work of this paper includes the following aspects: 1) the basic principle of the pulley compensation method is studied, the calculation model of the pulley compensation method is established, and the determination method of the compensation pulley position of the overhead crane and the calculation method of the motion track of the heavy object are given. The main factors determining the lifting performance of the overhead crane are analyzed, and the calculation model of the hoisting performance is established from the angles of the overturning stability of the whole crane and the mechanical properties of the boom respectively, and the calculation method of the hoisting performance of the elevated crane is given. In this paper, the calculation method of three hinged point layout of the luffing system of elevated crane is studied, the calculating model of the variable amplitude oil cylinder is established, and the calculation method for checking the stress and stability of the oil cylinder of the elevated crane is given. In this paper, the design software of the luffing system of port mobile overhead crane is developed. Taking YHC280 type elevated crane as the research object, the parameters of the system are obtained by using the design software. The rationality and practicability of software design and calculation are verified.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U653.921

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